Various build system fixes

[emilazy]

Hi there, I see you’re also a Nix user! Unfortunately some assumptions about Nixpkgs’s strange macOS OpenGL setup were baked into the code, so your project couldn’t be built on macOS without Nix, and a pull request I’m working on to clean them up in Nixpkgs broke the build there too. I’ve fixed those issues here, along with a couple others, and will be incorporating the patch into the Nixpkgs package for now.

By the way, it’d technically be better to use dependency('gl') instead, because Meson has special handling for this string. Unfortunately, because of the aforementioned Nixpkgs OpenGL weirdness, this produces a non‐functional build with the current stable Nixpkgs release. You might want to consider making that change after the current release is out of support, if you spend any time on this codebase in future.

[Radvendii]

Thank you so much for fixing this =)

Right now I am fixing cross-compilation to windows with the updated nixpkgs.

I don't have a Mac OS machine to check it on right now; Did you checked compilation both with- and without- nix, and that the game actually runs?

[Radvendii]

(i should really set up CI...)

[emilazy]

Yep, I checked the Nix build and a “normal” one using Homebrew for dependencies on macOS, and the game starts up fine (although I can’t say I’m particularly good at 1‐dimensional Mario!). Can’t speak for other platforms, though.